Johnny Galecki is a Belgian-born American actor, best known for his roles as David Healy in Roseanne, Rusty Griswold in National Lampoon's Christmas Vacation, and as Leonard Hofstadter in The Big Bang Theory.
When critically injured and near death, Fey attempts to takes Valoric to Valhalla, but accidentally drops him in the midst of World War II, where he is recruited by Frank Rock and the easy company in a battle against Iron Major and his Nazi troops.